Thermal mixture-fixture



S. N. HOLM.

THERMAL MIXTURE FIXTURE.

APPLlcmou man APR. 1a, 191s.

Patented J une 21, 1921.

Ill' lllfllilwi same by means adapted lhlllXTUll-m-WIXTURE ldt-92%tpeeideation of Lett-ere llatcnt.

rateatea .time ai9 met Application died April 3.3 wie. Serial lilo.228,336.

To @ZZ whom z't my con/cena .f

Be it known that l, tdvnnN. Honra, a citizen of the United States,residing at Dorchester county ot Suilollr, Commonwealth ofMassachusetts, have invented certain new and useful .lmprovements in'lhermal Mixture-Fixtures, of which the followin is a specification.

his invention relates to mixing valves and particularly to a xture formixing hot and cold water for use in bath tubs, shower baths or both.-

rl`he proportioned control ot hot and cold water where a combined tlowis required, as for example, for the purpose of bathing, involvesvarious didiculties which are of common experience.

The tempering of cold water by the admission of a small amount ot hotwater, or the lowering of the temperature ol a too hot supply amount ofcold, or the averaging ol hot and cold supplies to malre a tepid bathwhile apparently simple, are lrnown from experience to be diicult and tolrequently result not only in discomfort, but occasionally in actualharm by scalding or shoclr.

rlhe object ot my present invention is to provide tor the mixing ot hotand cold water to etlect the desired temperature and for the convenientcontrol and delivery oli the tor ordinary use.

'llhe constructive aspect ol my invention is well illustratedl byanenibodiment presented in the accompanyimn drawings, throughout whichand the lo lowing specification lilre reference numerals are employed toindi'cate corresponding parts7 and in these drawing:

lligure l is trent elevation oil a valve in accordance with myinvention.

Fig. 2 is a similar view partly in section with cap removed 3 is acentral vertical partial section, l

ig.. 4iis a section on the line anne-ai ot `i n 3.,

ln the `term shown my mixing valve comprises a casing l oil Jr'ormhaving a delivery 2 tor tub or the like, and an upward delivery riser 3Jtor connection as by the pipe a with a shower bath attachment. Thecoupling 5 is preterably made in the form of an offset connection havingits lower portion 51 connecting een by the admission ol aA smally l),and the chamber through which the generally cylindrical with the upwarddelivery 3 of the chamber 1 formed as a shouldered offset portion intowhich 1 s tapped a suitable frame or holder 6 1n which is held athermometer 7 the stem of whlch projects down into the opening 3 and isthus protected while its reservoir end 1s exposed to the contents of themain chamber of the casing l without projecting into the chamber itself.

he casing 1 provides a substantially cylindrical mixing chamber A andhas integra y formed on its inner face a depending rounded inlet chamberportion B. The portion B extends across the inner .face of the chamber Aat one side of the horizontal axis of said chamber, considering thevalve as it appears in Fig. 3, and provldes a pair of independent hotand cold water inlets 8 and 9 which are connected at 10 and ll with thehot and cold water supply pipes, and at 12 and 13 with the mixin chamberA, The bottom wall of the cham er A at the opposite side of the inletchamber portion B entends. as a relatively fiat valve -seat portionportion B is provided with an inwardly extended rib D co-planer withsaid portion C and 'constituting there with a valve seat for a porteddiskvvalve 1.11. The valve ld has ports 15 and 16 adapted to cover anduncover the ports 12 and 13, and is rotatably mounted on a stud 17tapped at 18 into the back oiD the extension walls at the rear of thecasing 1. The dislr 14 is provided with a squared projection 14:1

stud 17 passes, being sesured by a lool: nut i9.

The cover plate 20 having a suitable studing box 2l carries a wrenchhead 22 adapted to t over and clear the stud head 191, but engage thesquared ortion lal or the dish ld. The wrench 22 as a suitable stern 23extending through the stutlin box 21 and is operated by a handle 24e hepointer 25 is mounted on the squared end ot the stem 23 and coperateswith a series ot indices `2Std indicate the position of the ports et thedislr 1d relative to the openings 19; and 13.,

ln operation as will be seen it is possible at hrst and previous toopening the control valves of the shower bath or of the tub delivery toadmit a preliminary and test mixture ot hot and cold water into the mainchamber of the. casing 1. The readings of the pointer 25 on theindications 26 makes it possible` toA approximate the required mixturebut while the proportions As the water is drawn, variations are commonin both the hot water supply and the cold water supply rThe cold waterdelivery may grow colder or become warmer according to the location ofthe pipes, and in the same way the hot water supply may become hotter orless warm. rl`he results of the .variations in mixture may be observedand anticipated' in their delivery by watching the thermometer? andmaking any necessary readjustment inthe setting of the handle 24. l

ln this way my ixture provides a very satisfactory control 4for watermixtures for bathing and other purposes and as illustrated 'is capableof construction in a form neat and attractive, simple to operate, andconsistent with types of controls already Atamiliar to users, and thusicapable of being operated satisfactorily by the ordinary user.

Various modifications may obviously be made in detailsy oit' structureand arrangement of parts, all without departing from the spirit of myinvention if within the limits of the appended claims.

What I therefore claim and desire to secure by Letters Patent is:

1. A mixing jixture, comprising a shell providing a superposed mixingchamber,

said shell having a depending inlet chamber portion extending across thebottom of said mixing chamber at one side of the central axis of the'shell and said dependvalve interposed betw-een said mixing ber and saidinlet chamber portion and' ing inlet portion providing a valve seatportion and providing hot and cold water inlet chambers communicatingwith a superposed mixing chamber, the bottom wall of said mixing chamberbeyond said depending inlet portion constituting a valve seat portionalined with said valve seat portion of the depending inlet portion ofthe shell, and a valve seated on said seat portions and controlling thepassage of water 'from said hot and cold inlet chambers to said mixingchamber.

21A mixing fixture comprising a shell having a relatively flat valveseat portion at one side of its horizontal axis, and having tov one sideofthe plane of said seat p0r- `tion and at the-opposite side vof saidaxis a pair of independent hot and cold water intake chambers providingat their inner edge avalve seat, portion alined with said irstnamed seatportion, a rotatable disk valve seating on said seat portions, andcontrolling said chambers, and means for rotating said valve.

3. A mixing ixture comprising a generally cylindrical shell providing amixing chamber and having at one side of its central axis and integrallyormed upon its vunder face a (depending inletI chamber portion providinga pair of independent hot and cold water inlet chambers adapted todeliver to said mixing chamber, and a chamcontrolling the delivery ofwater to said mixing chamber.

ln testimony whereof l aiiix my signature in presence of two witnesses.vN

SVEN N. HOLM. Witnesses:

' Uniones B. RAWLINGS, 'MARION F. Weiss.

